Carbureter.



L. ANDERSON.

'GARBURETBR.

APPLICATION FILED OUT. 15, 1909.

Patented Aug. 20, 1912.

2 SHEETS-SHEET 1.

L. ANDERSON.

GARBURETER.

APPLICATION FILED ocT'. 15, 1909.

Patented Aug. 20, 1912.

2 SHEBTS-SHEET 2.

i 0 a v 4 1% v m k i g2 m\! 4 l LABS ANDERSON, OF CHICAGO, ILLINOIS.

CARBURETER.

Specification of Letters Patent.

Patented Aug 20,1912.

Application filed October 15, 1909. Serial No. 522,710. 7

To all whom it may concern: 1

Be it known that I, LARS A vDERsoN, a citizen of .the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Garbureters, of which the following is aspecification.

This invention relates .to means for carbureting air to form a fluid fuel for internaltop plan view thereof. Fig. 3 is a vertical central sectional view taken in the plane of dotted. line 3 3 of Fig. 2, the plane of the section also'being indicated by line 3 3 in Fig. 4. Fig. 4 is a vertical central section upon the plane of' dotted line 4 of Fig. 3. Fig. 5 is a detail top plan View of one of the elements of the construction. Fig. 6 is a detail view of a means for manually opening the'hydrocarbon inlet valve. Fig. 7 is a detail sectional view of the valve for con trolling the flow of the hydrocarbon.

The embodiment which I have selected for illustration comprises a casing consisting of sections 1 and 2, said sections, in this instance, being secured together by screws 3.

The casing is divided by the partition 4 into an air chamber 5 and a hydrocarbon cham-- ber 6. In this instance, the partition 4 overlies the upper edge of the casing section 1-; and the section 2, which is in the form of a dome,

:screws 3 passing throughthe dome and the partition member and into the section 1. Means is provided for admitting hydrocarbon to the lower part of, the chamber 6,

1 which admitting means in this instance is I constructed as follows: Upon the lower end of the casing-section 1 is formed an annular flange7 which is externally screw-threaded to receive a gland 8. Within the annular flange '7 is a disk 9 having a peripheral flange 10, said disk lying in contact wlth a shoulder 11 formed upon the casing 1. The

in correctly positioning the disk 9 within the flange 7 said flange has formed thereon two diametrically opposite lugs 13 adapted to enter notches l l'in the flange 12. 15 is a disk having an annular rib 16 adapted to contact the lower edge of the annular flange 10, the contacting surfaces of the flange and the rib being beveled to form a fluid-tight joint. The disk 9 is held in close contact with the annular shoulder 11 and the disk 15 is held tightly against the annular flange 10 by the gland 8, said gland having at its lower end an annular inturned flange 17 which underlies the disk 15. 18 is a strainer supported in any suitable manner by the disk 15. To the disk 15 is attached a means for coupling a hydrocarbon supply pipe to the carbureter and a means for draining the carbureter of hydrocarbon. As hereinshown, a central tubulars'tem 19is formed integral with the'disk 15 and with a drainvalve casing 20. Upon one end of the valve casing 20 is a screw-threaded nipple 21 communicating with the tubular stem 19. through the passages22 23. The hydrocarbon supply pipe 24 in this instance is attached to the nipple 21 by means of a gland 25 and a taper sleeve 26. Within the tapering chamber 27 of the drain valve casing is rotatably mounted a taper valve plug 28 having ports 29 and 30 communicating with the passage 22. When it is desired to drain the carburetor, the valveplug 28 may be turned to place the port. 30 in register with the outlet 31. A spring 32 holds the valve overlies the partition member, the plug in fluid-tight contact with the 'walls of the chamber .27. 28 is an .ar'mfby means of which the valve plug may be rotated. When. the arm 28 is in the ositionv which it tends to assume by the action'of gravity the outlet 31 is closed.

Cent-rally of p 33 having in o'ne e'nd thereof a hydrocarbon inlet opening 34. The flow of hydrocarbon through said opening is controlled by means of a valve member consisting, in this in- \st-ance, of a square pin 35 having at its lower end a conical valve portion 36.: The square :the disk 9fisa'tubular boss" 20 1 the upright members 39 are'connected with pin 35 is guided and confined by theinterior walls of the tubular boss 33 so thatj'the valve meinber'canno t get out of proper *alinement" with the opening 34.

The valve 36 is controlledibynia floatytheconnections between the float and the valve being such that any chance or irregul'ar movements of the float do not detrimentally aiie'ct the operation ofthe valve. As herein shown, the float consists of two sections of cork or other suitable material, said sections being secured to two branching arms Said'arms, in this instance, are formed integral with two upright members 39 connected together by the cross bar 40. The

upright members 39 are connected to the up per. ends of two posts 41 "(Fig' 5) rising from the disk 9 bymeans of a link 42, said I link having elongated hubs 43 to receive the pivot pins '44; and 45 The lower ends of the upper ends of two posts 46 (Fig. 5) on the disk 9 by means of a link 47 said link having elongated hubs 48 which are rotata bly mounted on the pins 49 and 50. The pin 49 is fixed in the lower ends of. the upright members 39 (Fig. 4), while the pin 50 is fi'xed in the upper ends of the posts 46. The upper end of the valve member35 36 is pivotally, mounted upon a pin 51 carried by the forked endof a lever 52,-said lever having an elongated hub 53* which is mounted upon a'pin 54fixed in the posts'46. On the upper side of the hub 53 is formed a .fork 55.'which receives a .pin 56 fixed in ears 57 upon the lower side of one of the hubs 48. It will be seenthat the float is maintained in a sub-- stantially horizontal position by the links 42 and 47 and thatthevertical movement of the float is positively transmitted to the valve 36 through the links 47 and 52-, the

fork and the pin 56. When the float rises thevalve 36 is lowered to reduce or out 01f the inflow of hydrocarbon.- It will be understood that the pivoted bearings in the system of levers connecting the float with the valve should be somewhatloose so that they may operate freely. Any tendency to 1111* due play or lateral-displacement is obviated by the elongated hubs 43 48 53. 1

The casing-section l has an outlet or "at i taching tube 58, lugs '59 'providing means for mounting the carbureter with its butlet in communication with the inspiration pipe (not shown of an internal combustion engine orother apparatus. Within the casing section 1 isa mixing chamber 60- comm-uni eating at oneend with the outlet 58f and at its other end witlithe air chamber, 5 through an opening 611 in .,t;he part tion 4'. Alined' with and diametrically opposite. outlet 5 8,;i's ach'ambenG t "d connects with fi i an air inlet tube bfi that ex- :t'endsint'o the chamber-6O andis alined with the outlet '58. The tube eais internally ta- I pered T1 or ufla ring from its: .midportion outs.

wardly toits opposite ends..- Centrally of the tube 63 is anozzle 64 arranged in this instance in a vertical position and projecting'inwardly from the lower side of .the tube 63. Said nozzle communicates with the hydrocarbon chamber. 6. SurrQQundingthe tipor orifice of the nozzle-364 are tw'o annular grooves 65'to receive aquantityqof hydrocarbon when the carbureter is primed, and

thus assist in quickly providing, a; supply-of the explosive mixture. The outer end of the chamber 62 is closedby a screw cap 66 having air; inlet openings67 therein. The entrance oi air through these openings may be controlled by means ofa rotatable valve or'damper 68 having openings 69 arranged .to be turned ;into and out of register with the position of said valve member so that it shall cover more or less of the orifice in said nozzle. In this instance the valve member 71 has a stein 72 which is longitudinally ide tube 73 fixed to or slidable within a formedupon the inner side of the can 66. The valve member is held from, rotation by means ofa squared portion 74 of-the stem,

said squared portion lymg within a square portion 75 of the bore 'of the guide tube 73. Upon the outer screw threaded end of the valve stem 72 isturned a nut 76 provided with suitableineans -for-rotating it, such as a pin 77 The nut 76 is rotatable within the tubular boss 70, but is helda'gainst longitudinal movement by a peripheral flange 78 which lies between the end of the tubular boss and a nut or gland .7 9. It will thus be seen that'whenth'e nut 76' is rotated by the operator,'-the--valve 'member,: being held against rotation, "will slide longitudinally to cover or uncover the orifice of the nozzle to 80 formed 'on the valve stem and lying between the nut 76 and thebottom of the tubular'boss70.

' .In order *to 81 confined between. said'valveand the nut frictional ly hold the valve 68 in adjusted position, I provide a spring .thefdesiredextent. The extent of. sliding movement of the valve is limited by a collar 79 and serving to press the valve against Y--' the cap-66. Whenthe englne is running,

air enters the openings 67 andpasses through the 'chamber62, the-tube'63 and the cham ber 60to the outlet 58,, hydrocarbon bein drawn through the nozzle64: and vaporizeland mixed with the air. ;II1 O I(lBI, to after: iiiiadd-itional supply of air, I provlde an air valve82l1aving, in thisfiiistance, the form valve disk 82 is-cusltioned by a coiled spring! 88 interposedbetween the disk and an add ustmg nut 89 on the bearing 85. Upon'the:

upper end of the stem 84: is a projection 90 which may be a nut, as shown in Fig. 3, bea tween which projection and the end wall of a bushing 91 a coiled spring 92 is confined. The bushing 91 has a screw-thread connection with the sleeve 86, and may be rotated by means of a milled head or cap 93 to adjust the tension of the spring 92. Said head is in the form of a-iiut turned on the upper end of the bushing. The nut 93 may be locked against rotation. with reference to the bushing by suitable means suchv as a spring clip 94 removably- -fitting in a groove in said nut, one end. of the clip ex-' tending through openings in the nut andthe bushing as shown in Fig. 3. When access to the interior of thebushing is desired the nut 93 may readily be removed from -the.

bushing. The downward or opening'movement of the valve disk is yieldingly resisted by the spring 92. The tension of theopposed springs 88 and 92 may be adjusted- .so that the valve disk shall move with the desired degree of freedom.

In order to hold the adjusting members.

89 and 91 in adjusted position, I provide two pins 95 slidably mountedin a passage 96 in a cylindrical longitudinal projection on the sleeve 86, said pins being yieldingly pressed against the parts 89 and 93 by a spring 97 inclosedwithin the opening 96. The outer ends of the pins 95 are rounded so that they may slip into and out of a series v of shallow recesses in the parts 89 and 93.

98 is a throttle valve secured to a spindle 99 which is rotatable in bearings 100. A

' stop 101 fixed on the spindle 99 is arranged to engage'adjustable stop screws 102 (Fig. 2) .to define the .open and closed positions of the throttle valve. An operating arm 103 is spindle 99 by means of a pinch-fit 104, 50,

that the relation of said arm to the, throttle -,yalve may be altered to suit the location of operating connections.

Means is provided for depressing the float to prime the carbureter, said means in the present instance consisting of a pin 1'05 slidable within a sleeve 106 and located above one of the float-sections 37. In the side of the pin 105 is set a stud 107 which extends into a cam slot .108 in the sleeve 106. A crank arm 109 provides means for rocking the pin 105. When the pin is rocked-by the operator the stud 107 travels down the cam slot 108, causin the pin to move down: ward against the a jacentfloat section. A spring 110 restores the pin to its normal poafiords an outlet for any condensed hydrocarbon vapor that may find its Way into the chamber 60.

Tn use, the entrance of hydrocarbon to the chamber 6 is regulated by the float-controlled valve 36. The suction of the engine causes an inflow of air.through the upward through theno'zzle 6& being thereby induced. It will be seen that the tip of the lnoz'zleextends to the axis of the tube 63, whereby the hydrocarbon is discharged into the center of the air current and thoroughly intermingled therewith- The upper entrance to the chamber 60, to wit, the opening 61,- is axially alined with the direction of movement of the valve disk 82. There is, consequently, no suction tending to move the valve disk laterally and cause it to bind or stick in its bearing in the boss- 85, The valve 71 may be easily adjusted to afford the desired flow of hydrocarbon through the nozzle 64. 4 It will be seen from-Figs. 3 and t that the trally witliin the carbureter, and that the orifice of said nozzle coincides substantially with the axis of the outlet 58, the chamber the fuel nozzle and the level of the fuel in the float chamber 6 is, therefore, disturbed as little as possible by tilting of the carbureter due to the passage 0 the car over 37, also, are located substantially centrally ,of' the carbureter. Said float sections'being lvertically movable, the relative extent to' which they are submerged in the liquid is approximately constant, hence their buoyancy is practically urnafieeted by tilting of the carbureter, and a reliable and sensitive cfintrol of the fuel inflow is thereby obtained. While -I havekdescribed the present em'- ticularity, it will be understood'that the invention is not limited to thedeta'ils specified, for various modifications will occur to persons skilledin the art. 7

Certain features of the carbureter herein illustrated are claimed in my copen'ding ap-' plicat-ions Serial Nos. 562,618 and 562,619 filed May 21,19l0.

I claim as-my invention: 7

1. In a carbureter, in combination, a casing, the lowerportion ofwhich constitutes a float chamber; a mixing. chamber extendinghorizontally within said casing and having an outlet at one side of the casing; a. vertically extending fuel nozzle communicating at its'lower end with the float chamberand at its upper end with the mixing sition. A small port 111 in the spindle 99 openings '67 and 83, a flow of hydrocarbon v fuel nozzle6et is located approximately ceni 60 and the tube 63.. The relation between grades and rough roads. The float sections bodiment of theiinvention with some parchamber; an air inlet for said mixing chamber almed withsaid outlet; a horizontally disposedbearing in the side of sa'idcasing adjacent to saidair'inlet; avalve for said 5 fuel nozzle, said valve having a stem ing, the lower portion of which constitutes a I float chamber, a mixing chamber .ex'tending' horizontally within said casing and having an outlet at one side of the casing; a vertically extending fuel nozzle communicating at its lower end with the float chamber and at its upfp er endwith themixing chamber;

. an inlet or said-mixing chamber'a'lined with said outlet; a horizontally disposed bearing in the side of said casing adjacent to said air i-nlet;-a valve forsaid fuel nozzle, said valve having a stem non-rotatably mounted in'said bearing, the valve overlying the tip of said nozzle and being slidable to cover,

to "a greater or less extent, the orifice of said nozzle; and means for operating said valve.

3. In a carburetor, in combination, a casing, the'lower portionof which constitutes a float chamber; a mixing chamber within said casing and having an outlet in one end of the casing; an air inlet tube extending horizontally within'said casing andprojecting into the mixing ehamberpand having an air inlet in the side of the casing ;oppo- .site said outlet; a hydrocarbon nozzle within said air tube and communicating at its lower end with the float chamber; a bearing attached to said casing adjacent'to said air inlet and alined with said air tube; a valve controlling said nozzle; said valve having a stem which is slidably mounted in said-- an bearing; valve.

4. In a carburetor, in combination, a casing, havinga horizontal partition therein,

the lower portion of said casing consti and means for operating said tut-ing a float chamber and the upper porhaving an air inlet alined with said outlet;

a fuelnozzle located within saidi'air inlet tube and communicating atfilits' lower end with the" float chamber; avalv controlling copies 0! thil patentof forming anair chamber; a mixing cham said fuel nozzle; and a valve-controlled air inlet for 'saidwa-i-r chamber.

5. In acarbureter, in combination, a -casing "havinga horizontal partition therein, the lower portion of said casing constituting a float chamber and-the upper portion thereher within thecasi'n-g and below said. part-ition, the casing having an attaching tube which forms the outlet for said inixingchamber, the inner-portion ofsa'id mixing chamber communicating with said air chamher; a horizontal air inlettube extending into said mixingchamber and having an airinlet alinedwith said outlet; a fuel'noz ;z'lelocated within'saidair inlet tube and V communicating at its lower end with the float chamber, said nozzle'being located approximately centrally .of the casing and the orifice thereof substantially coinciding with the axes of the mixing chamber and the outlet; a valve-controlling said: fuel nozzle; and a valve-controlled air inlet-forsaidair chamber. -v 6. In a"carbureter;in combination,;acasjing having, chambers 6,0 and 62 therein; an air inlet tube extending from the chamber 462 and projecting intothe chamber 60; a member closin the outer end of the chamber 62; abearing on said member; a hydrocarbon nozzle arranged to discharge hydrocarbon into said air-inlet tube; a valve controlling said nozzle, said valve hav1n-g a stem which is slidably mounted in sald bearing; and means for'moving said stem to operate said valve. j 7.= In a carbureter, in combination, areas-- ing having a float chamber in-its lower portion, an air chamber inits upper port-ion, and a mixing chamber, the casing having an attaching tube which formathe outlet for, and is-alined with, the mixing'chamber, the inner portion'of the mixing chamber ""comrnunicating' with the air chamber; a

horizontal air inlet tube'extending intovsaid mixing chamber and havmg 'an an inlet alined with said outlet; a fuel nozzle located within the air inlet tube and communicating at its lower end with the. float chamber; a

valve controlling said fuel nozzle;.a valved air inlet for saidtairchamber; was floatcontrolled fuel-- inlet Tin" thelower end of said float chamber. a a LARSANDERSON.

Witnesses: l I

0. PAUL Panxnn, v GEORGE L. CHINDAHLJ k a; ej'bbtaiined for five cents each, bifafldfe ssing thg {Qoinmissionei of Patents, 7 WashingtomD. G. i i 

